2026 head-to-head · Large Car
2026 Genesis G90 vs Rolls-Royce Phantom
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
AWD · 3.5L 6-cyl turbo · 8-speed automatic · 21 MPG
RWD · 6.7L 12-cyl turbo · 8-speed automatic · 14 MPG
The 2026 Genesis G90 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,821 a year to fuel (21 MPG), versus $4,232 for the 2026 Rolls-Royce Phantom (14 MPG). That's roughly $1,411 a year, or about $7,054 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Genesis G90
- Rolls-Royce Phantom
Side by side
| Genesis G90 | Rolls-Royce Phantom | |
|---|---|---|
| $2,821 | Your annual fuel cost | $4,232 |
| 21 MPG | Combined efficiency | 14 MPG |
| 18 MPG | City | 12 MPG |
| 26 MPG | Highway | 19 MPG |
| 109 cu ft | Passenger volume | 116 cu ft |
| 12 cu ft | Cargo volume | 15 cu ft |
| 426 g/mi | Tailpipe CO₂ (g/mi) | 609 g/mi |
| 4/10 | EPA fuel economy score | 2/10 |
| 4/10 | EPA greenhouse gas score | 2/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.5L 6-cyl turbo | Engine / motor | 6.7L 12-cyl turbo |
| 8-speed automatic | Transmission | 8-speed automatic |
| AWD | Drivetrain | RWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Genesis G90 vs Rolls-Royce Phantom across model years
- Genesis G90
- Rolls-Royce Phantom
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Rolls-Royce Phantom has more passenger space (116 vs. 109 cu ft); the Rolls-Royce Phantom has more cargo space (15 vs. 12 cu ft).
Among 24 2026 large cars, the Genesis G90 ranks 19th and the Rolls-Royce Phantom 23rd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 Genesis G90 or the 2026 Rolls-Royce Phantom?
Measured by cost to drive, the Genesis G90. The Genesis G90 is rated 21 MPG combined and the Rolls-Royce Phantom 14 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Genesis G90 vs. the Rolls-Royce Phantom per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,821 for the Genesis G90 and $4,232 for the Rolls-Royce Phantom.
Which has more cargo space?
The Rolls-Royce Phantom, with 15 cu ft of luggage volume versus 12 cu ft (EPA interior volume index).
Genesis G90 vs Rolls-Royce Phantom in other years
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